Restless Earth 0.0 / 5 ? GeographyNatural hazardsGCSEEdexcel Created by: ScienceWhoMusicCreated on: 29-10-13 21:45 What is the Atmosphere? The layer of gasres/air around us 1 of 10 What is the hydrosphere? The layer of water 2 of 10 What is the biosphere? The very thin layer of living things on the crust 3 of 10 what are convection currents in the mantle? Curculating movements of magma in the mantle caused by the heat of the core 4 of 10 What is magnitude? The size of an earthquake 5 of 10 what is ocianic crust? part of the crust made from dense basaltic rock 6 of 10 What are plate margins? The boundery between two tevnonic plates 7 of 10 What are tecnonic hazards? Threats posed by earthquakes and volcanos 8 of 10 What is the core made of? the solid inner core is made of iron and the liquid outer core is made of nickel 9 of 10 What is contnental crust? part of the crust made of less dense granitic rocks 10 of 10
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